1997 GMC C7500 WIRING DIAGRAM

How to Troubleshoot a GMC ABS Brake System | It Still Runs
The ABS brake system in a GMC vehicle uses a sophisticated ABS module to sense wheel speed. If the vehicle's wheels stop moving while brake pressure is being applied, but the vehicle itself is still moving, the system identifies this as a skid and automatically releases brake pressure to prevent the brake system from locking up.
GMC Wire information :: Your GMC wire information authority
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